If packing is not maintained properly, what is a likely consequence?

When packing is not maintained properly in a pump, a likely consequence is a loss of suction due to air being allowed to enter the pipe. Proper maintenance of packing is essential to ensure a tight seal around the pump shaft. If this seal is compromised, air can enter the system, disrupting the flow of liquid and reducing suction efficiency. This inefficiency can lead to operational problems such as cavitation, which can cause further damage to the pump and reduce its overall effectiveness in moving fluids.

The other options do not accurately reflect the consequences of poorly maintained packing. For instance, a lack of proper packing maintenance does not lead to a more efficient pump; in fact, it typically results in decreased efficiency. Similarly, a poorly sealed system is unlikely to generate more pressure, and in fact, it could lead to decreased pressure due to air intrusion and flow interruptions. The noise level of the pump is also not likely to diminish; a pump that is not functioning correctly may produce more noise rather than become quieter.